Add 20/12 and 9/84
1st number: 1 8/12, 2nd number: 9/84
20/12 + 9/84 is 149/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 84 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
20/12 = 20 × 7/12 × 7 = 140/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
9/84 = 9 × 1/84 × 1 = 9/84 - Add the two like fractions:
140/84 + 9/84 = 140 + 9/84 = 149/84 - So, 20/12 + 9/84 = 149/84
In mixed form: 165/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/12+9/84 20/12+18/84 20/24+9/84 60/12+9/84 20/12+27/84 20/36+9/84 20/12+45/84 20/60+9/84 20/12+63/84 20/84+9/84